Lens assembly for protective case

ABSTRACT

A lens assembly for covering at least a portion of an electronic device having a camera and a microphone. The lens assembly includes a first optically transparent portion configured to cover the camera of the electronic device. The first optically transparent portion extends from a first front optically transparent region having an area bounded by a light-blocking material covering a portion of a front surface of the lens assembly to a first rear optically transparent region having an area bounded by a light-blocking material covering a portion of a rear surface of the lens assembly. The area of the first rear optically transparent region is larger than the area of the first front optically transparent region. The lens assembly further includes an acoustically transparent portion configured to cover the microphone of the electronic device. The acoustically transparent portion includes a water-resistant membrane.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. application Ser. No.16/271,446 filed Feb. 8, 2019, which claims priority to U.S. ProvisionalApplication No. 62/640,670 filed Mar. 9, 2018, the disclosures of eachof which are hereby incorporated by reference in their entirety.

BACKGROUND

Personal electronic devices are commonly used for communication,entertainment purposes, as well as Internet access and a variety ofother purposes. Examples of personal electronic devices includesmartphones, tablet computers, gaming devices, audio players, videoplayers, cameras, portable computers, two-way radios, GPS receivers,smart glasses, virtual reality glasses or helmets, masks or eyewearincluding an electronic display, and/or other portable devices.Protective cases for electronic devices provide protection for theelectronic device from various forms of damage, including damage fromdust, water, snow, dirt, and drops. Exemplary protective cases aredisclosed in U.S. Pat. Nos. 8,342,325 and 9,300,344, the disclosures ofwhich are hereby incorporated by reference in their entirety.

Many electronic devices include a camera and associated flash, such as aflash LED, for providing light when taking a picture with the camera.The camera and flash are often positioned in close proximity, such as onthe rear of the electronic device. It can be desirable to include a lenscovering with the protective case to protect the camera and/or flashfrom damage, such as scratches or water. However, the presence of aprotective lens over one or both of the camera and flash reduces theamount of light transmitted from the flash to subject, as well as thelight from the subject to the camera aperture.

In some electronic devices, an audio port for a speaker or microphonemay be positioned proximate the camera and/or flash. However, coveringthe audio port with a lens may decrease the quality of the soundtransmitted across the lens, resulting in unacceptable audio quality.

Improvements in the foregoing are desired.

SUMMARY

In one example, a protective case is provided for an electronic devicehaving a camera and a microphone. The protective case including a lensassembly that comprises a transparent lens and a water-resistantmembrane attached to the transparent lens and configured to cover themicrophone of the installed electronic device. The transparent lens hasa first side configured to face the electronic device when theelectronic device is installed in the protective case and a second sideopposite the first side. A first portion of the first side and a secondportion of the second side are each coated with a light-blockingmaterial. The first portion has an area greater than an area of thesecond portion.

In one example, a protective case is provided for an electronic devicehaving a camera, a flash, and a microphone. The protective case includesa lens assembly comprising a water-resistant membrane configured tocover the microphone of the installed electronic device and atransparent lens affixed to the water-resistant membrane. Thetransparent lens includes a first side configured to face the electronicdevice and fully cover the camera and the flash when the electronicdevice is installed in the protective case, a first portion of the firstside being coated with a light-blocking material and a first opticallytransparent portion that is not coated or free of the light-blockingmaterial. The transparent lens further includes a second side oppositethe first side, a second portion of the second side being coated with alight-blocking material and a second optically transparent portion thatis not coated or free of the light-blocking material. The secondoptically transparent portion has an area greater than an area of thefirst optically transparent portion. The first portion has an areagreater than an area of the second portion. The transparent lens furtherincludes a first aperture configured to be aligned with the microphoneof the installed electronic device.

In one example, a protective case is provided for an electronic device.The protective case includes a front surface configured to at leastpartially cover a front surface of the electronic device when theelectronic device is installed in the protective case, the front surfaceof the protective case configured to allow interactive access to a touchscreen of the electronic device; a plurality of side surfaces configuredto at least partially cover a plurality of side surfaces of theinstalled electronic device; and a rear surface configured to at leastpartially cover a rear surface of the installed electronic device. Therear surface includes a lens assembly for protecting a camera, a flash,and a microphone of the installed electronic device. The lens assemblyincludes a water-resistant membrane attached to the transparent lens andconfigured to cover the microphone of the installed electronic device,the water-resistant membrane including a first aperture configured to bealigned with the camera of the installed electronic device and a secondaperture configured to be aligned with the flash of the installedelectronic device. The lens assembly also includes a transparent lensaffixed to the water-resistant membrane. The transparent lens includes afirst side configured to face the electronic device and fully cover thecamera and the flash when the electronic device is installed in theprotective case, a first portion of the first side being coated with alight-blocking material; a second side opposite the first side, a secondportion of the second side being coated with a light-blocking material,wherein the first portion has an area greater than an area of the secondportion; and a third aperture configured to be aligned with themicrophone of the installed electronic device.

In one example a lens assembly for covering at least a portion of anelectronic device having a camera and a microphone is provided. The lensassembly includes a first optically transparent portion configured tocover the camera of the electronic device. The first opticallytransparent portion extends from a first front optically transparentregion having an area bounded by a light-blocking material covering aportion of a front surface of the lens assembly to a first rearoptically transparent region having an area bounded by a light-blockingmaterial covering a portion of a rear surface of the lens assembly. Thearea of the first rear optically transparent region is larger than thearea of the first front optically transparent region. The lens assemblyfurther includes an acoustically transparent region configured to coverthe microphone of the electronic device. The acoustically transparentregion includes a water-resistant membrane.

In one example, a lens assembly for covering at least a portion of anelectronic device is provided. The lens assembly includes a lens havinga first side and a second side opposite the first side. The first sideincludes a light-blocking material defining a first opticallytransparent portion and the second side includes a light-blockingmaterial defining a second optically transparent portion. The lensfurther includes an acoustic aperture extending from the first side tothe second side. The lens assembly further includes a water-resistantmembrane covering the acoustic aperture a first adhesive layer affixingthe lens to the water-resistant membrane. The first adhesive layerincludes a first optical aperture aligned with the first opticallytransparent portion and the second optically transparent portion of thelens. The first adhesive layer further includes an acoustic aperturealigned with the acoustic aperture of the lens.

In one example, a protective case for covering at least a portion of anelectronic device is provided. The protective case includes a rearsurface configured to cover at least a portion of a rear surface of theelectronic device. The rear surface includes an aperture. The protectivecase further includes a lens assembly positioned in the aperture. Thelens assembly includes a lens having a first side and a second sideopposite the first side. The first side includes a light-blockingmaterial defining a first optically transparent portion and a thirdoptically transparent portion. The second side includes a light-blockingmaterial defining a second optically transparent portion and a fourthoptically transparent portion. The lens further includes an acousticaperture extending from the first side to the second side. The lensassembly also includes a water-resistant membrane covering the acousticaperture and a first adhesive layer affixing the lens to thewater-resistant membrane. The first adhesive layer includes a firstoptical aperture aligned with the first optically transparent portionand the second optically transparent portion of the lens, a secondoptical aperture aligned with the third optically transparent portionand the fourth optically transparent portion of the lens, and anacoustic aperture aligned with the acoustic aperture of the lens.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A illustrates a front perspective view of an electronic deviceenclosed in an exemplary protective case;

FIG. 1B illustrates a rear perspective view of the electronic device andprotective case of FIG. 1A;

FIG. 2A illustrates a front view of an exemplary lens assembly;

FIG. 2B illustrates a side view of the lens assembly of FIG. 2A;

FIG. 2C illustrates an exploded view of the lens assembly of FIG. 2A;

FIG. 2D illustrates a sectional view of a lens assembly along the lineA-A in FIG. 2A;

FIG. 2E illustrates a sectional view of a lens assembly along the lineB-B in

FIG. 2A;

FIG. 2F illustrates an enlarged view of a lens assembly of the portionindicated in the circle C in FIG. 2D;

FIG. 3 illustrates an exemplary adhesive ring of the lens assembly ofFIG. 2A;

FIG. 4A illustrates a rear view of an exemplary lens of the lensassembly of FIG. 2A;

FIG. 4B illustrates a front view of an exemplary lens of the lensassembly of FIG. 2A;

FIG. 5 illustrates an exemplary first adhesive layer of the lensassembly of FIG. 2A;

FIG. 6 illustrates an exemplary membrane of the lens assembly of FIG.2A;

FIG. 7 illustrates an exemplary second adhesive layer of the lensassembly of FIG. 2A;

FIG. 8 illustrates an exemplary compressible foam layer of the lensassembly of FIG. 2A; and

FIG. 9 illustrates a sectional view of the lens assembly of FIG. 2A inan exemplary protective case.

DETAILED DESCRIPTION

An exemplary electronic device 10 and protective case 20 are illustratedin FIGS. 1A and 1B. Although FIGS. 1A and 1B illustrate electronicdevice 10 as a smartphone computer, in other embodiments the electronicdevice 10 may be selected from, without limitation, tablet computers,gaming devices, audio players, video players, cameras, portablecomputers, two-way radios, GPS receivers, smart glasses, virtual realityglasses or helmets, masks or eyewear including an electronic display,and/or other portable electronic devices.

Electronic device 10 may include one or more display screens, such as aninteractive touch-screen 12 accessible when the electronic device 10 isinstalled in protective case 20, as well as various audio inputs andoutputs, and/or user input buttons (not illustrated in FIGS. 1A and 1B).

Electronic device 10 includes a first camera 14A, a second camera 14B,and flash 16, each illustratively positioned on a rear surface ofelectronic device 10. Electronic device 10 further includes a microphone18 positioned on the rear surface of electronic device 10 proximatecameras 14A, 14B and flash 16. In some embodiments, electronic device 10includes additional cameras 14, flashes 16, and microphones 18. Asillustrated in FIG. 1B, the flash 16 is positioned between cameras 14A,14B, and microphone 18 is positioned proximate camera 14B and flash 16.In other exemplary embodiments, cameras 14A, 14B, flash 16, andmicrophone 18 have other suitable arrangements.

Protective case 20 encases at least a portion of electronic device 10 toprevent device 10 from being damaged. Protective case 20 may comprise asingle-piece into which electronic device 10 is fitted, or protectivecase 20 may include two or more pieces removably attached to each otherthrough one or more clasping or coupling mechanisms. Exemplaryprotective cases 20 are disclosed in U.S. Pat. Nos. 8,342,325 and9,300,344, the disclosures of which are hereby incorporated by referencein their entirety.

Protective case 20 illustratively includes a front surface 22 coveringand protecting at least a portion of the front surface of electronicdevice 10. In some embodiments, protective case 20 may include amembrane at least partially covering touch-screen 12. In otherembodiments, protective case 20 may include an aperture through whichtouch-screen 12 can be directly accessed. Protective case 20 includes aplurality of side surfaces 24 at least partially covering and protectingcorresponding side surfaces of electronic device 10. Side surfaces 24may include one or more buttons 26 or port doors 28 configured to allowaccess to buttons or ports of electronic device 10.

Protective case 20 includes a rear surface 30 covering and protecting atleast a portion of a back surface of electronic device 10. Rear surface30 illustratively includes an aperture 32 in which is positioned a lensassembly 34 for covering and protecting at least a portion of cameras14A, 14B, flash 16, and microphone 18.

Referring next to FIGS. 2A-2F, an exemplary lens assembly 34 isillustrated. FIG. 2A illustrates a front view of an exemplary lensassembly 34. FIG. 2B illustrates a side view of lens assembly 34. FIG.2C illustrates an exploded view of exemplary lens assembly 34. FIG. 2Dillustrates a sectional view of lens assembly 34 along the line A-A inFIG. 2A. FIG. 2E illustrates a sectional view of lens assembly 34 alongthe line B-B in FIG. 2A. FIG. 2F illustrates an enlarged view of theportion of lens assembly indicated by circle C in FIG. 2D.

As shown in FIG. 2C, lens assembly 34 is illustratively formed from anadhesive ring 36, lens 38, first adhesive layer 40, water-resistantmembrane 42, second adhesive layer 44, and compressible foam layer 46.In some exemplary embodiments, lens assembly 34 does not include everylayer illustrated in FIG. 2C. In other exemplary embodiments, lensassembly 34 may include more layers than those illustrated in FIG. 2C,such as a removable protective coating. In still other exemplaryembodiments, one or layers illustrated in FIG. 2C may be formed from twoor more distinct pieces. In still other exemplary embodiments, one ormore of the layers illustrated in FIG. 2C may be combined with anotherlayer.

In some exemplary embodiments, lens assembly 34 includes first opticallytransparent portion 48 configured to align with first camera 14A ofinstalled electronic device 10. In some exemplary embodiments, lensassembly 34 includes second optically transparent portion 50 configuredto align with second camera 14B of installed electronic device 10. Insome exemplary embodiments, lens assembly 34 includes third opticallytransparent portion 52 configured to align with flash 16 of installedelectronic device 10. Optically transparent portions 48, 50, 52 allowlight to travel through lens assembly 34. In some exemplary embodiments,each optically transparent portion 48, 50, 52 allows as little as 50%,60%, 75%, 80%, 85%, as great as 90%, 95%, 97%, 98%, 99%, or greater, oflight to pass through the optically transparent portion or within anyrange defined between any two of the foregoing values, such as 50% to99%, 75% to 95%, or 75% to 90%.

In some exemplary embodiments, lens assembly 34 further includesacoustically transparent portion 54. Acoustically transparent portion 54allows sound to travel through lens assembly 34. In some exemplaryembodiments, acoustically transparent portion 54 allows as little as50%, 60%, 75%, 80%, 85%, as great as 90%, 95%, 97%, 98%, 99%, orgreater, of sound to pass through acoustically transparent portion 54,or within any range defined between any two of the foregoing values,such as 50% to 99%, 75% to 95%, or 75% to 90%.

Referring to FIG. 3, an exemplary adhesive ring 36 is illustrated. Insome exemplary embodiments, adhesive ring 36 affixes lens assembly 34 tothe rear surface 30 of protective case 20. As illustrated in FIG. 2C,adhesive ring 36 is directly affixed to lens 38. The middle of adhesivering 36 illustratively includes an aperture 56 allowing access to lens38. As shown in FIG. 2C, optically transparent portions 48, 50, 52 andacoustically transparent portion 54 are aligned with aperture 56.

An exemplary lens 38 is illustrated in FIGS. 4A and 4B. Lens 38illustratively comprises a transparent substrate, such as sapphire,glass, or a transparent plastic such as nylon, poly(meth methacrylate)(PMMA), or polyethylene terephthalate (PET). In some exemplaryembodiments, lens 38 comprises a single piece of the transparentsubstrate. In other examples, lens 38 may comprise multiple components.FIG. 4A illustrates the front surface 58 of lens 38, which is positionedcloser to an interior of the protective case 20 and the installedelectronic device 10. FIG. 4B illustrates the rear surface 60 of lens38, which is positioned away from the interior of the protective case 20and the installed electronic device 10.

The front surface 58 and rear surface 60 of lens 38 are each partiallycoated with a light blocking material 64. In some exemplary embodiments,light blocking material 64 is an ink pad printed onto surfaces 58, 60 oflens 38.

Front surface 58 includes one or more optically transparent regions 66.As illustrated in FIG. 4A, front surface includes three opticallytransparent regions 66A, 66B, and 66C configured to align with the firstcamera 14A, the second camera 14B, and the flash 16, respectively, ofinstalled electronic device 10.

Rear surface 60 includes one or more optically transparent regions 68.As illustrated in FIG. 4B, rear surface includes three opticallytransparent regions 68A, 68B, and 68C configured to align with the firstcamera 14A, the second camera 14B, and the flash 16, respectively, ofinstalled electronic device 10.

In some exemplary embodiments, optically transparent region 66Acomprises a first optically transparent region, optically transparentregion 68A comprises a second optically transparent region, opticallytransparent region 66B comprises a third optically transparent region,optically transparent region 68B comprises a fourth opticallytransparent region, optically transparent region 66C comprises a fifthoptically transparent region, and optically transparent region 68Ccomprises a sixth optically transparent region. In other exemplaryembodiments, lens 38 includes more or fewer than six opticallytransparent regions.

Optically transparent regions 66A and 68A of lens 38 illustratively forma portion of optically transparent region 48 of lens 34 for first camera14A. Optically transparent regions 66B and 68B of lens 38 illustrativelyform a portion of optically transparent region 50 of lens 34 for secondcamera 14B. Optically transparent regions 66C and 68C of lens 38illustratively form a portion of optically transparent region 52 of lens34 for flash 16.

As illustrated in FIGS. 4A and 4B, the optically transparent regions66A, 66B, 66C of front surface 58 are smaller than the correspondingoptically transparent regions 68A, 68B, 68C of rear surface 60. In someembodiments, the corresponding optically transparent regions 68A, 68B,68C of rear surface 60 may be larger than the corresponding opticallytransparent regions 66A, 66B, 66C of front surface 58 by as little as1%, 2%, 5%, 10%, as great as 15%, 20%, 25%, 30%, 40% or greater, orwithin any range defined by any two of the foregoing values, such as 1%to 40%, 10% to 30%, or 20% to 25%. Referring to FIG. 9, the largeroptically transparent regions 68 of rear surface 60 position thelight-blocking material outside the respective field of view 86A, 86B,86C for first camera 14A, second camera 14B, and flash 16. The areaencompassed by fields of view 86A, 86B, 86C may also be referred to askeep out zones or keep out cones. It can be desirable to keep the fieldsof view 86A, 86B, 86C as clear from obstruction as possible.

Acoustic aperture 70 extends through lens 38. Acoustic aperture 70 isconfigured to align with microphone 18 of installed electronic device10. Acoustic aperture 70 forms a portion of acoustically transparentregion 54 of lens assembly 34.

Referring next to FIG. 5, an exemplary first adhesive layer 40 isillustrated. As shown in FIG. 2C, first adhesive layer 40 affixes lens38 to water-resistant membrane 42. First adhesive layer 40illustratively includes three optical apertures 72A, 72B, 72C configuredto align with the first camera 14A, second camera 14B, and flash 16,respectively, of electronic device 10. The three optical apertures 72A,72B, 72C form a portion of optically transparent portions 48, 50, 52 oflens assembly 34. First adhesive layer 40 further includes acousticaperture 74 configured to align with microphone 18 of electronic device10. Acoustic aperture 74 forms a portion of acoustically transparentregion 54 of lens assembly 34.

Referring next to FIG. 6, an exemplary water-resistant membrane 42 isillustrated. Water-resistant membrane 42 illustratively includes threeoptical apertures 76A, 76B, 76C configured to align with the firstcamera 14A, second camera 14B, and flash 16, respectively, of electronicdevice 10. The three optical apertures 76A, 76B, 76C form a portion ofoptically transparent portions 48, 50, 52 of lens assembly 34.

Water-resistant membrane 42 forms a portion of acoustically transparentregion 54 of lens assembly 34. In some exemplary embodiments,water-resistant membrane 42 has a relatively small pore size that allowsair, such as sound waves, to pass through the water-resistant membrane42, but prevents or resists the flow of water through thewater-resistant membrane 42. Exemplary membranes include woven mesh andexpanded PTFE material. In some exemplary embodiments, water-resistantmembrane 42 has a pore size as large as 100 micron or less, 75 micron orless, 50 micron or less, 40 micron or less, 30 micron or less, 25 micronor less, 20 micron or less, 15 micron or less, or within a range definedbetween any two of the foregoing values, such as 15 micron to 100micron, 15 micron to 40 micron, 20 micron to 40 micron, 25 micron to 40micron, or 25 micron to 30 micron.

Referring next to FIG. 7, an exemplary second adhesive layer 44 isillustrated. As shown in FIG. 2C, second adhesive layer 44 affixes lenswater-resistant membrane 42 to compressible foam layer 46. Secondadhesive layer 44 illustratively includes three optical apertures 78A,78B, 78C configured to align with the first camera 14A, second camera14B, and flash 16, respectively, of electronic device 10. The threeoptical apertures 78A, 78B, 78C form a portion of optically transparentportions 48, 50, 52 of lens assembly 34. Second adhesive layer 44further includes acoustic aperture 80 configured to align withmicrophone 18 of electronic device. Acoustic aperture 80 forms a portionof acoustically transparent region 54 of lens assembly 34.

Referring next to FIG. 8, an exemplary compressible foam layer 46 isillustrated. Compressible foam layer 46 is configured to abut a portionof installed electronic device 10. In some exemplary embodiment,compressible foam layer 46 is formed from a light-blocking material toprevent light from flash 16 from entering cameras 14A, 14B without firstpassing through lens assembly 34, thereby providing enhanced imagequality. Compressible foam layer 46 illustratively includes threeoptical apertures 82A, 82B, 82C configured to align with the firstcamera 14A, second camera 14B, and flash 16, respectively, of electronicdevice 10. The three optical apertures 82A, 82B, 82C form a portion ofoptically transparent portions 48, 50, 52 of lens assembly 34.Compressible foam layer 46 further includes acoustic aperture 84configured to align with microphone 18 of electronic device. Acousticaperture 84 forms a portion of acoustically transparent region 54 oflens assembly 34.

Referring again to FIGS. 2A-2F, optically transparent portion 48corresponding to first camera 14A illustratively includes aperture 56 ofadhesive ring 36, optically transparent regions 66A and 68A of lens 38,optical aperture 72A of first adhesive layer 40, optical aperture 76A ofwater-resistant membrane 42, optical aperture 78A of second adhesivelayer 44, and optical aperture 82A of compressible foam layer 46.Optically transparent portion 50 corresponding to second camera 14Billustratively includes aperture 56 of adhesive ring 36, opticallytransparent regions 66B and 68B of lens 38, optical aperture 72B offirst adhesive layer 40, optical aperture 76B of water-resistantmembrane 42, optical aperture 78B of second adhesive layer 44, andoptical aperture 82B of compressible foam layer 46. Opticallytransparent portion 52 corresponding to flash 16 illustratively includesaperture 56 of adhesive ring 36, optically transparent regions 66C and68C of lens 38, optical aperture 72C of first adhesive layer 40, opticalaperture 76C of water-resistant membrane 42, optical aperture 78C ofsecond adhesive layer 44, and optical aperture 82C of compressible foamlayer 46. Acoustically transparent portion 54 corresponding to secondcamera 14B illustratively includes aperture 56 of adhesive ring 36,acoustic aperture 70 of lens 38, acoustic aperture 74 of first adhesivelayer 40, a portion of water-resistant membrane 42, acoustic aperture 80of second adhesive layer 44, and acoustic aperture 84 of compressiblefoam layer 46.

Referring next to FIG. 9, a sectional view of the lens assembly 34 in aprotective case 20 is illustrated. Protective case 20 illustrativelyincludes a raised perimeter 88 surrounding aperture 32. Lens assembly 34is adhered to the device side of the rear of case 20 by adhesive ring36. As shown in FIG. 9, a beveled edge 90 extends from the perimeter 88towards the lens assembly 34.

The elements, components, and steps described herein are meant toexemplify some types of possibilities. In no way should theaforementioned examples limit the scope of the invention, as they areonly exemplary embodiments.

The phrases “in some embodiments,” “according to some embodiments,” “inthe embodiments shown,” “in other embodiments,” “in some examples,” “inother examples,” “in some cases,” “in some situations,” “in oneconfiguration,” “in another configuration,” and the like generally meanthat the particular technique, feature, structure, or characteristicfollowing the phrase is included in at least one embodiment of thepresent invention and/or may be included in more than one embodiment ofthe present invention. In addition, such phrases do not necessarilyrefer to the same embodiments or to different embodiments.

The foregoing disclosure has been presented for purposes of illustrationand description. Other modifications and variations of the disclosedtechniques may be possible in view of the above teachings. Theembodiments described in the foregoing disclosure were chosen to explainthe principles of the concept and its practical application to enableothers skilled in the art to best utilize the invention. It is intendedthat the claims be construed to include other alternative embodiments ofthe invention, except as limited by the prior art.

What is claimed is:
 1. A lens assembly for covering at least a portionof an electronic device having a camera and a microphone, the lensassembly comprising: a first optically transparent portion configured tocover the camera of the electronic device, the first opticallytransparent portion extending from a first front optically transparentregion having an area bounded by a light-blocking material covering aportion of a front surface of the lens assembly to a first rearoptically transparent region having an area bounded by a light-blockingmaterial covering a portion of a rear surface of the lens assembly,wherein the area of the first rear optically transparent region islarger than the area of the first front optically transparent region;and an acoustically transparent portion configured to cover themicrophone of the electronic device, the acoustically transparentportion including a water-resistant membrane.
 2. The lens assembly ofclaim 1 further comprising a lens formed from a transparent substrate,the lens comprising the first optically transparent portion.
 3. The lensassembly of claim 2, wherein the transparent substrate is selected fromthe group consisting of sapphire, glass, and transparent plastic.
 4. Thelens assembly of claim 2 further comprising an adhesive layer affixingthe lens to the water-resistant membrane.
 5. The lens assembly of claim4, wherein the adhesive layer includes an optical aperture aligned withthe first optically transparent region and an acoustic aperture alignedwith the acoustically transparent region.
 6. The lens assembly of claim1, wherein the area of the first rear optically transparent region isfrom 10% larger to 30% larger than the area of the first front opticallytransparent region.
 7. The lens assembly of claim 1, wherein the area ofthe first rear optically transparent region is from 20% larger to 25%larger than the area of the first front optically transparent region. 8.The lens assembly of claim 1, further comprising a second opticallytransparent portion configured to cover a second camera of theelectronic device, the second optically transparent portion extendingfrom a second front optically transparent region having an area boundedby the light-blocking material covering the portion of the front surfaceof the lens assembly to a second rear optically transparent regionhaving an area bounded by the light-blocking material covering theportion of the rear surface of the lens assembly, wherein the area ofthe second rear optically transparent region is larger than the area ofthe second front optically transparent region.
 9. The lens assembly ofclaim 1, further comprising a third optically transparent portionconfigured to cover a flash of the electronic device, the thirdoptically transparent portion extending from a third front opticallytransparent region having an area bounded by the light-blocking materialcovering the portion of the front surface of the lens assembly to athird rear optically transparent region having an area bounded by thelight-blocking material covering the portion of the rear surface of thelens assembly, wherein the area of the third rear optically transparentregion is larger than the area of the third front optically transparentregion.
 10. A lens assembly for covering at least a portion of anelectronic device, the lens assembly comprising: a lens having a firstside and a second side opposite the first side, wherein the first sideincludes a light-blocking material defining a first opticallytransparent portion and the second side includes a light-blockingmaterial defining a second optically transparent portion, the lensfurther including an acoustic aperture extending from the first side tothe second side; a water-resistant membrane covering the acousticaperture; and a first adhesive layer affixing the lens to thewater-resistant membrane, the first adhesive layer including a firstoptical aperture aligned with the first optically transparent portionand the second optically transparent portion of the lens, the firstadhesive layer further including an acoustic aperture aligned with theacoustic aperture of the lens.
 11. The lens assembly of claim 10,wherein the light-blocking material of the first side of the lensfurther defines a third optically transparent portion and light-blockingmaterial of the second further defines a fourth optically transparentportion, and wherein the first adhesive layer includes a second opticalaperture aligned with the third optically transparent portion and thefourth optically transparent portion of the lens.
 12. The lens assemblyof claim 11, wherein the light-blocking material of the first side ofthe lens further defines a fifth optically transparent portion andlight-blocking material of the second further defines a sixth opticallytransparent portion, and wherein the first adhesive layer includes athird optical aperture aligned with the fifth optically transparentportion and the sixth optically transparent portion of the lens.
 13. Thelens assembly of claim 10, wherein an area of the second opticallytransparent portion is greater than an area of the first opticallytransparent portion.
 14. The lens assembly of claim 10, furthercomprising a second adhesive layer affixing the water-resistant membraneto a compressible foam layer formed from a light-blocking material. 15.The lens assembly of claim 14, wherein the compressible foam layerincludes a first optical aperture aligned with the first opticallytransparent portion and the second optically transparent portion of thelens, the compressible foam layer further including an acoustic aperturealigned with the acoustic aperture of the lens.
 16. A protective casefor covering at least a portion of an electronic device, the protectivecase comprising: a rear surface configured to cover at least a portionof a rear surface of the electronic device, the rear surface includingan aperture; and a lens assembly positioned in the aperture, the lensassembly including: a lens having a first side and a second sideopposite the first side, wherein the first side includes alight-blocking material defining a first optically transparent portionand a third optically transparent portion, and wherein the second sideincludes a light-blocking material defining a second opticallytransparent portion and a fourth optically transparent portion, the lensfurther including an acoustic aperture extending from the first side tothe second side; a water-resistant membrane covering the acousticaperture; and a first adhesive layer affixing the lens to thewater-resistant membrane, the first adhesive layer including: a firstoptical aperture aligned with the first optically transparent portionand the second optically transparent portion of the lens; a secondoptical aperture aligned with the third optically transparent portionand the fourth optically transparent portion of the lens; and anacoustic aperture aligned with the acoustic aperture of the lens. 17.The protective case of claim 16, wherein the light-blocking material ofthe first side of the lens further defines a fifth optically transparentportion and the light-blocking material of the second side of the lensfurther defines a sixth optically transparent portion, and wherein thefirst adhesive layer includes a third optical aperture aligned with thefifth optically transparent portion and the sixth optically transparentportion of the lens.
 18. The protective case of claim 16, wherein anarea of the second optically transparent portion is greater than an areaof the first optically transparent portion and an area of the fourthoptically transparent portion is greater than an area of the thirdoptically transparent portion.
 19. The protective case of claim 16,wherein the first adhesive layer affixes the first side of the lens tothe water-resistant membrane, the lens assembly further comprising anadhesive affixing the lens assembly to a perimeter surrounding theaperture.
 20. The protective case of claim 16, further comprising asecond adhesive layer affixing the water-resistant membrane to acompressible foam layer formed from a light-blocking material, whereinthe compressible foam layer includes a first optical aperture alignedwith the first optically transparent portion and the second opticallytransparent portion of the lens, the compressible foam layer furtherincluding an acoustic aperture aligned with the acoustic aperture of thelens.